Therefore, since the promise that we can enter into rest is still open, let's be careful so that none of you will appear to miss it.
References for Hebrews 4:1
We also had the good news preached to us, just as the Israelites did. However, the message they heard didn't help them because they weren't united in faith with the ones who listened to it.
We who have faith are entering the rest. As God said, And because of my anger I swore: "They will never enter into my rest!" And yet God's works were completed at the foundation of the world.
References for Hebrews 4:3
Then somewhere he said this about the seventh day of creation: God rested on the seventh day from all his works.
References for Hebrews 4:4
But again, in the passage above, God said, They will never enter my rest!
References for Hebrews 4:5
Therefore, it's left open for some to enter it, and the ones who had the good news preached to them before didn't enter because of disobedience.
Just as it says in the passage above, God designates a certain day as "today," when he says through David much later, Today, if you hear his voice, don't have stubborn hearts.
References for Hebrews 4:7
If Joshua gave the Israelites rest, God wouldn't have spoken about another day later on.
So you see that a sabbath rest is left open for God's people.
The one who entered God's rest also rested from his works, just as God rested from his own.